Lauri Markkanen added 21 points as the Bulls ended a franchise-record 11-game home losing streak with their first win at the United Center since beating Orlando on Dec. 21.

Porter scored at ease, getting the Bulls’ first six points in the third quarter and capping it off with a dunk off a pass from Zach LaVine. Porter later set up LaVine for a three-point play to give the Bulls an 80-66 lead with 7:21 left in the quarter.

Porter was acquired a day before the deadline in a trade with Washington, in which John Wall and Bradley Beal were the primary options. Porter is adjusting just fine to his new scoring role in the Bulls’ offense.

“Obviously, Otto had a big night. He let it come to him. He took good shots, had a nice rhythm, got the ball in his hands,” Bulls coach Jim Boylen said. “His versatility, I thought, really showed.”

Avery Bradley got Memphis to 109-101 with 4:48 left, but the Bulls answered with a 10-0 run. Markkanen made a 3 to give the Bulls a 118-101 lead with 2:33 left.

The Bulls also won for only the fourth time in 22 games.

Bradley scored 15 points for the Grizzlies, who lost for the second straight night.

“I think we were tired. ... We had a bunch of guys put forth a ton of effort in a game that went down to the wire,” Grizzlies coach J.B. Bickerstaff said. “Guys were competitive, and the energy level was high, the spirit was high. Tonight, we just couldn’t find a spark.”

Mike Conley was back in the Grizzlies’ lineup after missing Tuesday’s 108-107 loss to the Spurs with an illness. He finished with 12 points.

Porter shot 8 for 9 from the field and 3 for 3 from 3-point range for 21 points in the first half.

“[Porter] played very well, but not only him, but Lopez as well, Robin. He had a really good game,” Bradley said. “I thought he was the difference maker. He set the tone for the game for their team.”

The Bulls led, 67-62, at the half. Jaren Jackson Jr. and Jonas Valciunas each had 10 points for the Grizzlies, and they each finished with 12 points.

Bad blood?

Recently traded forward Bobby Portis indicated in a HoopsHype article that the communication with the Bulls leading up to his trade to Washington at the deadline wasn’t always direct.

“I just don’t think it was done the right way,” Portis was quoted as saying.

Boylen didn’t agree.

“At this level, a lot of times you get out of something what you put into it,” Boylen said. “Bobby had a great experience here that he’s verbalized. Obviously, he’s with a different team now. We did offer Bobby a contract to be here, and it’s his prerogative to choose to not take that deal, part of the league, too. Everybody here is being treated with respect. I’m direct and honest with what I want, who we are, who I think we can be.”

TIME FOR SOME REST

The break couldn’t come at a better time for Bradley, who was traded from the Clippers at the deadline to Memphis. “I’m going to enjoy it. Go see my family now. It’s been a crazy few days so it is going to be nice to get home with my wife and my kids,” he said.

TIP-INS

Grizzlies: C Joakim Noah, who received a nice ovation when he checked in the first quarter, played against his former team for only the third time. Noah was the 2013-14 Defensive Player of Year with the Bulls. “My years in Chicago were just so special and I feel I learned so much. In that 10-year span we were really going for it, we were going for a championship, and I thought there was a couple of years where we really had a chance,” Noah said.

Bulls: Former F Bobby Portis indicated in a HoopsHype article the communication with the Bulls leading to his trade to Washington at the deadline wasn’t always direct. “I just don’t think it was done the right way,” Portis was quoted as saying. Boylen didn’t agree. “At this level, a lot of times you get out of something what you put into it. Bobby had a great experience here that he’s verbalized. Obviously, he’s with a different team now. We did offer Bobby a contract to be here and it’s his purgative to choose to not take that deal, part of the league too. Everybody here is being treated with respect. I’m direct and honest with what I want, who we are, who I think we can be,” Boylen said. ... G Kris Dunn didn’t play. He is out with a lower back contusion.

UP NEXT

Grizzlies: Bradley reunites with his former teammates when the Grizzlies host the Clippers on Feb. 22.

Bulls: Travel to Orlando after the All-Star break to face the Magic on Feb. 22.